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Originally Posted by sid_galt It was off the head. I did a google search but I coudln't find the compression ratio generated in a gun It's about 50,000 atmospheres. Good luck trying to compete ...

Can this work? Water being a liquid and largely incompressible won't react quickly to variations in pressure to vary temperature, unlike a gas such as steam. What temperature is the water starting? Or am I misunderstanding the procedure? How much difference are you looking to achieve and what kind of flow rates are we talking about?

Rose, Director Peter Jackson happened to comment on this very subject in this week's installment of the King Kong production diary: http://www.kongisking.net/index.shtml He says, "Of course, digital doubles will never replace actors. I mean, that's the big fear and I think it's a lot of old nonsense really when people say, 'Oh well, you know, we won't need actors any more -- we...

The chicken and egg problem Note that there may be partial solutions to two key challenges to a hydrogen economy. First of all, biofuels from algae appears to offer an efficient and practical solution to solar energy conversion. In effect, by farming algae for the production of biofuels, one grows the solar collector. Test crops have produced the fuel equivalent of about 925KW-Hrs ...

Omagdon: Originally Posted by omagdon7 I still think you're pretty much just making up numbers unless you're a court reporter. More importantly you don't seem to understand what I am saying is while you are listening to music you are still not...

Here are a few equations you might apply: Make sure to match up your units correctly. Steel is an ideal material if you consider cost, availability, and strength. I calculate that four 1/8-inch steel rods (or slightly larger cables) would support your load with a factor of safety of five. Would this be suitably low profile?

The gun also had some great optics for sighting targets. A good overall design, to the point that it went from being a fixed platform mounted gun to being used used as a main battle tank gun.

Well you should apply to MIt anyway. How would you differentiate yourself??? Well try with some math, science and engineering competitions! If you take bc Calculus, bc Physics and ap Chemistry and get good grades you should get in. If not in MIT maybe Columbia or Cornell, and if not in those well try to open your mind to some other areas of the country. I live in NC and I will go somewhere else...

Hi, In my field Keith Duckworth. Single handedly designed the best racing engine ever designed; the Cosworth DFV not only that but on a paper drawing board in 9 months in 1967. The engine was designed for Ford to be used by Lotus; Lotus were eventually forced to allow other teams to use the DFV or the sport would cease to exist, it was that good. The engine won on its first ever ...

Speaking of which...is there any particular reason why the Flyak designers chose T-foils (for the hydrofoils), as opposed to V-foils? Specifically, does 180° (as the angle between two foils) produce the optimal L/D ratio for the Flyak's foils at speeds around 20kts ? Why not use dihedral , or anhedral ?

The chicken and egg problem Note that there may be partial solutions to two key challenges to a hydrogen economy. First of all, biofuels from algae appears to offer an efficient and practical solution to solar energy conversion. In effect, by farming algae for the production of biofuels, one grows the solar collector. Test crops have produced the fuel equivalent of about 925KW-Hrs ...

I think the real issue of storage is sustainability and environmental impact. There is a cost with both. Battery's are made in a very non environmentally friendly way. So many of the great environmental solutions and alternative energy solutions rely on this one item and this could be even worse that the oil pollution we are dealing with now. Are there solutions for the pollution created by...

Quote: New Zealand Company Produces World’s First Sample Of Bio-Diesel From AlgaeNew Zealand-based Aquaflow Bionomic Corporation announced today that it had produced its first sample of home-grown bio-diesel fuel with algae sourced from local sewerage ponds.“We believe this is the world’s first commercial production of bio-diesel from algae outside the laboratory, in ‘wild’ conditions. ...

Omagdon: Originally Posted by omagdon7 I still think you're pretty much just making up numbers unless you're a court reporter. More importantly you don't seem to understand what I am saying is while you are listening to music you are still not...

Well you should apply to MIt anyway. How would you differentiate yourself??? Well try with some math, science and engineering competitions! If you take bc Calculus, bc Physics and ap Chemistry and get good grades you should get in. If not in MIT maybe Columbia or Cornell, and if not in those well try to open your mind to some other areas of the country. I live in NC and I will go somewhere else...

Flywheel Diameter Hey all, I realize that when weight is moved from the center of a flywheel toward the outer edge (or a larger diameter wheel is used), the capacity for energy storage increases. But I have no idea how to calculate how much that increase actually is, or whether the increase remains constant (proportionately) between the two as RPMs increase. Anyone have a formula handy for ...

Averagesupernova: Yes, you are right. The instantaneous voltage on the envelope changes linearly with applied audio. Thank you. I don’t know what the other points are that you are talking about. This was the only difference I know of that we had...

DisplayAds("Right1"); Ok, Currently i'm enrolled in a phyics based major, at an Ohio university. I'm thinking about transfering in about a year or two to a engineering school. I love working with anything airplane related, and i have a natural nact for that stuff as well. I was looking at an AE program but they deal alot with Rockets and that sorta thing. I was looking ...

deflection of a strut hello all, first post here so don't bite. if a perfect strut was compressed by an 2 imaginary point forces acting exactly on its centroid, and ignoring outside effects, would it bend laterally, and why so? when I say perfect, i mean ignore all consequences of practicality, ie. the alignment is precise to the eg. atom, and the bar is of impeccable geometry along ...

Hmmmm, I just had a thought. I don't know whether the original poster is still interested in this question... But perhaps a rather crude Betatron could be built by taking the vacuum tube out of an old television and controlling the motion of the electrons that head towards the screen via an electromagnet that could be added (on the outer casing of course). This would require quite a bit of...